From df556597485a4b0f81666f6fdef7a2491eab0ebb Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 7 Apr 2022 13:57:33 +0200
Subject: [PATCH] Fix type errors in interactive package selection, fixes
 #10712

---
 src/Composer/Command/PackageDiscoveryTrait.php | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Composer/Command/PackageDiscoveryTrait.php b/src/Composer/Command/PackageDiscoveryTrait.php
index 39f4b9efd910..ad996b9942ea 100644
--- a/src/Composer/Command/PackageDiscoveryTrait.php
+++ b/src/Composer/Command/PackageDiscoveryTrait.php
@@ -184,7 +184,7 @@ final protected function determineRequirements(InputInterface $input, OutputInte
                     $io->writeError($choices);
                     $io->writeError('');
 
-                    $validator = function ($selection) use ($matches, $versionParser) {
+                    $validator = function (string $selection) use ($matches, $versionParser) {
                         if ('' === $selection) {
                             return false;
                         }
@@ -216,13 +216,13 @@ final protected function determineRequirements(InputInterface $input, OutputInte
                         'Enter package # to add, or the complete package name if it is not listed: ',
                         $validator,
                         3,
-                        false
+                        ''
                     );
                 }
 
                 // no constraint yet, determine the best version automatically
                 if (false !== $package && false === strpos($package, ' ')) {
-                    $validator = function ($input) {
+                    $validator = function (string $input) {
                         $input = trim($input);
 
                         return strlen($input) > 0 ? $input : false;
@@ -232,7 +232,7 @@ final protected function determineRequirements(InputInterface $input, OutputInte
                         'Enter the version constraint to require (or leave blank to use the latest version): ',
                         $validator,
                         3,
-                        false
+                        ''
                     );
 
                     if (false === $constraint) {